I take scantron tests quite often. In fact, at my college, I take at least one quiz or test involving scantron answering every day which leads me to my question. What, based on your experience, is/are the absolute best Pencil(s) for taking standardized and scantron-based tests? Generally, I use mechanical pencils with .5mm lead. While these work decently well, the lack of thickness in the lead often leads to unnecessary efforts to fill-in the bubble fully. With finals approaching soon enough for some, I'm asking the question for all of us. Thanks in advance for all helpful and insightful comments.